<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  
  <script>
    let sum = 200000
      let test = 4500
      let count = 0
    while(sum > 0) {
      sum -= test
      test -= 15
      count++
    }

    console.log(count, test)
  </script>
</body>
</html>